Global Admin 2

Repairing Admin 2 boundaries

Open source admin 2 boundaries have missing countries & invalid geometries. Following shapefile: gadm_wag_adm2 combines across multiple shapefiles in an attempt to create consistent admin2 shapefiles. Github did not allow for large file upload (bit lazy for lfs), shapefile is in gdrive.

Background

Publicly Available Admin boundaries

• Gadm
• Geoboundaries
• Gaul
• Polio
• World Agglomerated

Repair stages

• Add countries from other shps
  • Tried wag, gaul, and geoboundaries
  • Used wag (did not take islands, GRN, Antarctica)
  • Added 22 countries from wag
• Remove polygons with area < 0.01 sqkm
  • This helped in repairing additional unaccounted for polygons
  • Initially dim(shp) > unique(polygons)
• Remove polygons with y coordinates > 75
  • This is specific, executed for raster extraction (so some parts of Russia are not here)
  • NL raster polygon does not cover y coord > 75

Maps

Gloabl Admin Maps

Gloabl Admin Maps

Gloabl Admin Maps

Gloabl Admin Maps

Gloabl Admin Maps